<!-- based on issue 13 -->
<h1><a href="1">one</a></h1><h2><a href="2"> two </a></h2><h3><a href=" 3 "> three </a></h3><h4><a href="4">four</a> <a href="5"> five </a></h4><p><a href="6"> six </a> <a href="7"> seven eight </a> <a href="9">nine</a> <a></a>  <a href="#"> </a> <a href="10"> ten </a> foo<a href="11"> eleven </a></p>